Bernard Controls AT SWITCH RANGE, Руководство для стартапов, Страница: 10 / 24

English
10
Wiring
•
Internal wiring
To perform the wiring , remove the cover and pass the cables
through the cable glands, then connect the wires on the terminal
blocks.
Please refer to the supplied wiring diagram for terminal numbering.
Both the heating resistance (
9 ) and torque limiter ( 5 ) switches must
be integrated into your control system to prevent potential damage
to the actuator or valve.
•
Ground terminals wiring
Attach a ground wire fitted with a 6 mm ring terminal to the
internal ( 7 ) and external ( 8 ) ground terminals.
Checking wiring
You need to check the wiring once it is finished.
How to check the wiring
1. Make sure that the power supply voltage matches the
information on the label located on the side of the actuator.
2. Check that the cable glands are correctly tightened.
3. Manually drive the valve (see § 4) to a mid-travel position.
4. Electrically operate a counterclockwise rotation and check
that the motor rotates in the right direction.
5. Manually press on the counterclockwise travel limit switch,
which should stop the motor.
6. Repeat steps 4 and 5 for the clockwise direction.

If any fault is detected at this stage, please check all wiring.